The other day I stumbled upon an advanced system configuration application called "Ubunsys". While testing it on my Ubuntu virtual machine, I tried to show hidden startup items and then messed up with the .bashrc file. Every time I open the Terminal, It displayed an error message something like below:
-bash: /home/sk/.bashrc: line 68: syntax error near unexpected token `)' -bash: /home/sk/.bashrc: line 68: `xterm*|rxvt*)'
I use this VM only for testing purposes, so I could easily delete it and create a new one in couple minutes. But, I don't want to do that. I did a quick web search and came across a reliable answer in AskUbuntu that described how to restore .bashrc to its default settings. I followed it, and fixed the issue within a few minutes. If your .bashrc file is corrupted for any reason, you can simply restore your .bashrc file to default settings in Ubuntu as described below.
Restore .bashrc File To Default Settings In Ubuntu
As you might already know, there is a default version of the .bashrc file in the /etc/skel/ directory in Ubuntu.
$ ls -al /etc/skel/ total 40 drwxr-xr-x 2 root root 4096 Jul 10 12:26 . drwxr-xr-x 137 root root 12288 Aug 29 11:46 .. -rw-r--r-- 1 root root 220 Apr 5 2018 .bash_logout -rw-r--r-- 1 root root 3771 Apr 5 2018 .bashrc -rw-r--r-- 1 root root 8980 Apr 16 2018 examples.desktop -rw-r--r-- 1 root root 807 Apr 5 2018 .profile
So if you have problems with .bashrc file, you can easily restore it to its default settings like below.
First, backup your current .bashrc file using command:
$ cp ~/.bashrc ~/.bashrc.bak
Then, copy the default version of .bashrc file to your current version like below:
$ cp /etc/skel/.bashrc ~/
Finally, run the following command to update the changes.
$ source ~/.bashrc
If you unknowingly messed up your .bash_profile or .bashrc files, follow the above steps to restore them to the default value. I tested this in Ubuntu 16.04 LTS, and worked fine. I hope It will probably work on other Ubuntu versions and derivatives.